Controlling mechanism for gas-burners.



No. 886,677. PATENTBD MAY 5, 1908.

P. GAIS. CONTROLLING MECHANISM FOR GAS BURNERS.

APPLIOATION II LED JAN.31,1906.

INVENTOR ATTORNEY WITNESSES.

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UNITED STATES PATENT OFFICE.

FRANK CAIS, OF CLEVELAND, OHIO.

CONTROLLING- MECHANISM FOR GAS-BURNERS.

Application filed January 31, 1906.

To all whom it may concern:

Be it known that I, FRANK CArs, a citizen of the United States, resident of Cleveland, county of Ouyahoga, and State of Ohio, have invented a new and useful Improvement in Controlling Mechanisms for Gas-Burners, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to means for automatically controlling the supply of fuel to gas burners, and particularly to the gas burners of a stove or range. Its object is to provide a device of this sort that will be readily adaptable to types of stoves and ranges such as are at present in use, and one that will involve as little mechanism as possible. This element of simplicity in construction is quite important, inasmuch as regulating devices of this character have always heretofore been more or less complicated with consequent initial expense, and attendant trials in adjusting and keeping them clean.

The said invention consists of means hereinafter fully described and particularly set forth in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means, however, constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing: Figure 1 represents a plan view of a gas burner involving my improved construction, a portion of the same being shown in cross-section; Fig. 2 is a side elevation of such burner, a portion being again shown in cross-section; and Fig. 3 shows in longitudinal vertical cross-section a slightly modified form of construction adapted to be embodied in my device.

In such figures, A represents a fixed support which, in the case of a stove or range, would of course be a art of the stove or range-frame. Mountec in such frame, or at least fixed relatively to the same, is a gas supply pipe B. Gas-supply pipe B is provi ed with the usual cock B whereby the gas may be turned either fully on or entirely off. The burner O comprises the burner proper, or combustion chamber, C, and a mixing chamber O connected with combustion chamber O by a short tubular assage O Burner C, as a whole, is detachab y mounted Specification of Letters Eatent.

Patented May 5, 1908.

Serial No. 298,735.

in support, or frame, A, so as to bring combustion chamber C properly in position below the corresponding spider, not shown, designed to receive the utensil to be heated by such particular burner. To retain the burner in place I provide it with laterally extending lugs or pins 0 disposed so as to engage recessed lugs a formed on the inner side of frame A. It follows from this manner of mounting burner O, that such burner is not only readily detachable from its support but is free to rock on pins 0 which form in effect a pivotal axis therefor. A downwardly extending lug c on the under side of mixing chamber O is ada ted by engagement with support A to limit t e downward swin of the burner. It is adapted to be similarly imited in its upward movement by a set screw 0, mounte in the portion of support A directly above chamber C and disposed so as to engage the end of an arm a secured on the to of such chamber. It is evident that by a j ustment of this set screw a, the upper limit of movement of burner C may be varied.

The burner is designed to be normally retained in its upper position, in which arm. 0 rests against set screw 01., by means of a spring 0 attached at one end to a fixed point, for instance gas-supply pipe B as shown, and at the other to the outer end of an arm 0 attached to the burner and extending forwardly therefrom. Other means than such arm and spring might obviously be employed to thus counterpoise the burner, and the manner of attaching the spring to effect the desired purpose might be changed without departing from the spirit of my invention. The manner shown, however, is preferred because by having the arm 0 further detachablyconnected with the spring, the whole burner may be readily removed from the frame and just as readily replaced.

When in place in the range frame, the mixing chamber C of the burner is designed to be connected with the end of the gas-supply pipe B. To this end such chamber is formed with an opening 0 adapted to loosely receive the end of the gas-supply ipe, the opening 0 being large enough to allow for the play made necessary by the rocking of the burner. The supply of air to the mixing chamber is regulated in the usual manner by a perforated sleeve 0 fitted to chamber 0 and adapted to more or less completely close air inlet 0 formed in the walls of such chamber. The end of gas-supply pipe B is fitted with a perforated plug or discharge nozzle 77 which may be changed for another having a different size of perforation, as will be understood, to accommodate the burner to either artificial or natural gas. Intermediate of such discharge nozzle 6 and cock B in pipe B, is provided a regulating valve 13". Such regulating valve B may be of any approved type; the one illustrated in Figs. 1 and 2 is a sort of oscillating valve, while in Fig. 3 is shown a piston valve adapted to the same situation, which involves the operation of such valve by the rocking of burner C.

The desired operative connection between the burner and the valve is made in the first case by means of a short arm Z) mounted on the end of the valve and adapted to be engaged by a lug c on the rear end of the burner. By this construction it is evident that, as the burner rocks on pins 0, valve B will be oscillated. The adjustment is such. that the valve will be slightly open when the burner occupies its normal upper position, the amount of such opening being a matter of exact adjustment by means of set screw a. When the burner is depressed, arm I) will be oscillated to completely open the valve. In case a piston valve of the type used in Fig. 3 be employed, a convenient form of connection with burner C is the one there shown where the valve, being arranged to reciprocate vertically, is connected directly to arm This connection must be of such a character as to permit the free up and down movement of the arm, as well as to allow such arm to be readily withdrawn from engagement with the valve when it is desired to remove the burner from the range.

The manner in which my improved burner is designed to operate has been already indicated in part. As was stated, the portion C" of the burner is disposed directly beneath the spider upon which the cooking utensil is pilot flame in the burner; and so when the valve is thus opened wide, the full flow of gas is at once ignited. Upon removing the utensil from the spider the counterpoised burner immediately assumes its normal upper position whereby the valve B is actuated to again out down the flow of gas to the minimum amount required to maintain a pilot flame.

It is seen from the foregoing that not only is there no complicated structure involved in my improved burner but that its operation is correspondingly simple and easy. I would particularly call attention to the readiness with which the parts may be taken apart and assembled.

Having thus described my invention in detail, that, which I particularly point out and distinctly claim is 1. The combination of a gas-supply pipe provided with a discharge nozzle, a valve controlling said pipe, a support, a burner removably pivoted in said support and adapted to loosely engage said discharge nozzle, a setscrew in said support adapted to adjustably limit the movement of said burner, means operatively connecting said burner with said. valve, and a spring connected with said burner and adapted to normally retain the same against said set-screw.

2. In a gas stove, the combination with the a frame, such frame being provided with recessed ears, a burner formed with lugs adapted to pivotally rest in said cars, a set-screw in said frame adapted to adjustably limit the movement of said burner, a spring normally retaining said burner against said setscrew, a gas-supply pipe fixed relatively to said frame and provided with a discharge nozzle, the rear end of said burner being adapted loosely to receive said discharge nozzle, a valve in said gas-supply pipe, and means operatively connecting said burner with said valve.

3. In a gas stove, the combination with the frame, such frame being provided with recessed ears, a burner formed with lugs adapt ed to pivotally rest in said ears, a set-screw in said frame adapted to adjustably limit the movement of said burner, a spring normally retaining said burner against said set-screw, a gas-supply pipe fixed relatively to said.

frame and provided with a discharge nozzle,

the rear end of said burner being adapted loosely to receive said discharge nozzle, an oscillatory valve in said gas-supply pipe, an arm mounted upon the end of said valve, and a lug on the rear end of said burner adapted detachably to engage said arm.

Signed by me, this 29th day of January, 1906.

FRANK OAIS;

Attested by D. T. DAVIES, JNo. F. OBERLIN. 

